Sheet splitting and cutting machine.



H. A. BUMPER. SHEET -SPLITTING AND CUTTING MACHINE.

APULIOATION FILED BOY. 28, 1913. 1,107,762.. Pat-.euml Aug. 18, 1914 3 BBETN-BHEE'I 2.

i y lf3/ffy d. Canzfel when taken in conjunction with the Fig. 1.

4 slitting chine, showing th j SHEET SPI''ITTING am: CUTTING MACHINE.

Specication of Letters Patent. Application filed November 28, 1913. Serial No.

Patented Aug. 18

one of the stationary members of the transverse cutting knife. Fig. 10 is the rotary `portion or other .member of the transverse cutting knife.

In all the views the same reference characters are employed to indicate similar parts.

To all whom it may concern.'

Be it known that I, HARRY A. CUMFER, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Sheet Splitting and Cuttihg Machines, of which the following is a specification. i

My invention relates to improvements 1n sheetlsplitting and cutting machines and has for its object to provide aemachine for slitting and transversely cutting sheets of matcrial, such as sheets of roofing, and the like.

(')ne ofthe specific objects of my invention is to provide a self-feeding machine which will feed a slitted sheet of material from a set of slittingr knives to divide the sheet into strips to a transversely cutting knife to .subsequently cut the divided strips into pieces of uniform length, asin making shingles, and then pile the separate pieces or shin les in separate stacks for convenient handllng.

My machine is especially adapted for cutting sheets of roofing material, such vas asphaltum-treated felt into longitudinal strips and subsequently transversely cutting the strips into parts or pieces substantially the length of roofing shingles thereby to provide asphaltum shingles of equal length and dimensions after which .the shingles are piled in uniform stacks.

Other, further, and more specific objects of my invention will become readily apparent, to persons skilled in the art, from a consideration of the following description drawries a pinion4 which has intermeshinef driving relation with a gear wheel 18 fixed to the knife shaft 19. his transversely cutting knife shaft is provided with bear frame members 10-10 as at The knife shaft 19 carries a knife which extends substantially the full length of the shaft between thc frames 10-10 and which is separable in two parts, 21 the major portion, and 21 secured together as by means of bolts 22. To the major portion 21, which projects further from its axis, is-seeured a cutting knife 23, as by bolts 24. The knife .23V is more clearly shown in Fig. 10 and consists of a body part 25 havingr angularly deflected side portions 26 and 26 each having a cutting edge 27. The body portion, 25 is perforated at intervals, as at 28, by means of elongated slots so as to permit adjustment of the knife blade. The knife blade, 23 may. be reversed and either of its edges 27 used and it may be conveniently sharpened by grinding away the surfaces 29.

` coperating, stationary 4cutting blade 30 is substantially rectangular in cross section, in general outline shaped somewhat resemblingthe letter I, is provided with four` cutting edges 31. It is also provided withw slots 32 for adjustment. It is held in place on the frame by through the slots. through a ledge 35 the knife 31 rests.

ings, wherein` Figure 1 is an end elevation of the maereceiving end. Fig. 2 is a transverse section takenon line 2-2 of' Fig. 3 is a plan view of the machine. Fig. 4 is an enlarged fragment of an end showing the driving gearing on the Fig. 5 shows a portion of the Adjusting bolts 34. pass upon which the bottom of The bolts `34 are located jpstng and holding the same on th shaft. at intervals alongr the longitudinal portion ig. 6 is an enlarged section of a poiion of of the ledge 35 and are means -by which the the device shown in Fig. 2 showing the blade 31 may be adjusted vertically for transverse .cutting knife. Fig. 7 is a transproper coperation with theblade 23.

verse section taken on line .7--7 of Fig. 5 of te means for adjusting and securing the knife'inplace on its shaft. Fig. 8 11s an' isometric view of one half of the circular slitting knife. Fig. 9 is a portion of The head 21 carrying the rotatingr knife' 23, is somewhat oblique, longitudinally, so as to give a shearing cut between the cutting edges of theknives 23 and 30 to render the cutting operation more easily performed.

means of bolts 33 that pass By the radial. adjustment of the knife 23, and the vertical adjustment of the knife 30 l a wide range of positions may be effected.

To render the cutting edges 3l more acute 5 I prefer to hollow out the top and bottom surfaces of the knife 30, as at 36, so that the blade 30 may be sharpened by simply grinding off the surfaces 39. The blade 30 is preferably rabbeted on each side, as at 3S, so as to provide means whereby the heads of the bolts 33 will clear the knife 23 in its revolutions.

Any fabric or material, inserted between the knives and 30 will be shcared once during cach revolution of the wheel 17.

@n the opposite end of the knife shaft 19 is a pinion 40, which is in geared relation with an intermediate transmitting gear wheel 4l, carried on the stud 42 and this gear wheel 20 is in geared relation with an intermediate pinion 43 that is carried upon the stud 44. The intermediate pinionv 43 is used to give proper direction of rotation to the gear A wheel 45 which is fixed to the shaft 46, rllhe shafts 46 and 47 carry feed rolls 4 The bearings 49 for the shaft 47 are vertically adjustable by means of screws 50-50, one of the adjustable bearings and screws being arranged on each of the frames 10-10- The feed rolls 48 feed the longitudinally severed strips to the cutting knives 23 and 30.

rfhe shafts 46 and 47 which carry the feed rolls v48, are positively connected .together as by gear wheels 5252 so that the feed rolls 48-48 may be positively rotated.

' Shafts 53 and 54 carry the slitting knives by means of which the sheet is longitudinally cut into strips. Shaft 54 is driven .from the shaft46 by means of the gear wheel 40 52 and the intermediate gear 55, which is carried on the stud 56, which meshes with the gear wheel 57. Shaft 53 is also provided with a similar gear wheel 58, whereby shaft 53 is positively driven by the shaft 54.

These two shafts are provided with adjustable bearings 59 that may be vertically adjusted by means "of" screws 60-60, there being a pair of them provided on each of the frames 10e-10.

At intervals along the shaft 53 are located slitting knives 61. These knives are divided each into two pieces so that Vthey may conveniently' be placed on the shaft without dismantling the same and when so placed they are adapted to be located at any convenient point along thelongitudinal extent of shaft 53, as will hereinafter be more fully explained.v

As shown inE Fig. 5 each slitting knife structure consists of a sleeve 63 slotted at intervals, preferably at four points around its circumference, as at 64, so that the diameter thereof may be slightly contracted. The sleeve terminates at one end in a dis 65. 'llhe sleeve is screw threaded, as at 36,

and a screw threaded nut 67, being radially perforated at its periphery, as at 68, for accommodation of a Spanner wrench, whereby to turn the nut, is screw threaded for coaction with the sleeve, as at 69. rlhe end of the sleeve is tapered, as at 70, and the nutis correspondingly tapered, as at 71,.so that by screwing the nut 67 upon the sleeve the coacting tapered surfaces will have the effect of contracting the inner diameter of the sleeve and causing the structure to adhere closely to the knife shaft- 53, .so that by loosening the nut 67, the slitting blade structure may be moved to any selected point along the shaft 53 and secured l hereto by tightening the nut 67. The diski portion 65 of the structure is perforated at several points for screws 7 2 which take through a washer 73 into the said disk 65 passing through perforations 74 made in each half of the knife 75. The screws 72 hold the washer in close contact. with the knife blade 75 and in rotative engagement with the disk 65. The knives are semicircular in form and therefore may be placed upon the shaft 53 with out the necessity of dismantling the shaft and threading `them over the end thereof as would be necessary if they were made complete in a single piece. The coacting slitting knife member consists ,of the disk 65 being somewhat enlarged and made in a single piece and hardened on the surfaces confrontstructure is similar to the structure just described with reference to the cutting knife 75, in every essential respect. I have therefo-re indicated similar parts thereof by the same reference characters with the exponent prime added.

rfhe front cutting surface of the disk 65 `is located on the shaft4 64A secured thereto by the adjustable means heretofore described, in contact with the straight surface of the knife 7 5 so that when the. sheet is passed between these two. cutting instrumentalities it will be properly divided longitudinally into strips.

notched, as at 79, so not to interfere with the rotary knives and is secured to the frame, as by screws 80, and is downturne as at 8l, to adord a guiding means for the sheet that is to be inserted between the r0- tating slitting knives and to afford a rest or support for the material as it passes throng the rolls 48-48. A similar plate 82 is placed just back ofthe rolls 48-48 and is secured to the frame by means of screws 83. It is down-turned, as at 84, and provides a guiding and supporting means for thel slitted strips just before they pass into the cutting off knife. v

After the sheetv has been inserted between the rotating slitting knives it asses between the rolls 48-48 and is t ereby drawn 'ing the knife blade 75. This part ofthe i truck in such a position as to be quickly and 1,107,762 8 through the slitting knives and ro er1 easily stacked in vertical arrangement as 5o divided into strips which are pus ed fors own at 99, so that each pile of shin les ward to the transversely cutting knife which will fall upon the truck in substantmlly cuts the longitudinal strips into uniform,

5 equal lengths to make in each pile can by the hei ht for such oi'ger purposes for which the maof the pile as there will always be the same 55 chine may`l` e used. number of shingles in each of the piles.

e arrangement of the gearing is such After one truck 95 has been filled it may y that the rolls 48`48 will fee invariable be quickly and readily taken away and anlengt s of the strips into position for cutother truck placed in its position; which nfr oil', while the cutting ofi` knife` 23 is position is regulated and controlled by the 60 ma ing a single revolution. stop 98.

As t .e length of shingles is uniform and While I have herein shown and described invariable it is not necessary to provide any a single embodiment of my invention for the adjustment for the purpose of severin the purpose of clear disclosure it is evident that strips into various lengths, but if suc archanges in the structure may be made within 65 rangement is desirable, the gearing can be the scope of the appended claims. properly proportioned for that-purpose. aving described my invention, `what I v i ter the rotating knife 23 has severed the claim is strips they fall upon an inclined apron 84 1. In a machine of the character described, and from there are precipitated upon a belt a rotary disk knife divided into a plurality 7o conveyer 85. his belt conveyer consists of of segments; a structure for carrying saidy an endless piece of canvass, or the like, segments, and means for securing said se passed around drums 86 and 87. A laterally ments to said structure in proper alinement pi ojecting bracket 88 is secured to the fram.v l n a machine of the character described,

as by bolts 89 to support the bearinffs 90 for a rotatable sha' t' a rotary knife divided 75 t e shaft 91 lthat carries the drums 87-871 into a plurality of segments for attachment e conveyer85 is driven by means of a thereto, a structure for carrying said se spi ocket wheel 92 that is secured to the o ments, means for securing said segments to posite end o f the drive yshaft 13 and achain said structure in proper alinement and 9 that is'in driving engagement with a means for adjustably securing said structure 8o sprocket 94 on the shaft 91. is gives o said haft. proper direction of movement to the con 3. In amachine of the characterdescribed, veyer 85 to carry the shingles, or trans` a rotatable shaft, a rotatable knife divided versely cut sections, away from the cutting into a plurality of segments for attachment oil knife. d thereto, a structure for cariying said se 85 In the illustrated embodiment there will ments consistinvr of a slotted sleeve havin e ve strips cut from the sheet that passes a tapered end, means for securing said se t rough t e machine and the knife 23 will ments to the other end of said sleeve and a cut the stri s into live shingles which will nut threaded on said sleeve and havinvr a ta.-

simultaneous y fall upon the conveyer pered coacting portion for contracting said 90 an be conveyed toa oint of deposit. As sleeve to secure 1t to said shaft. the shingles fall from e conveyer they will yIn testimony whereof I hereunto set my fail upon truck g5 whch is provlided with hand in the presence of two witnesses.

45 a ase or ottom 6 an a vertica wall 97.

stop 8 regulates4 the distance that the HARRY A' CUMFER' In the presence of` FONE BAIN MARY F. 'Aninim truck 95 will be placed from the conveyer 85, shingles will always fa1l upon the 

